Texas Instruments SN74LVC1G19DRLRG4

Overview

SN74LVC1G19DRLRG4 from Texas Instruments is a 1-of-2 decoder/demultiplexer in SOT-5X3 (DRL) package, operating from 1.65 V to 5.5 V supply, with 4 ns max propagation delay at 3.3 V, ±24 mA output drive, and I_off support for live insertion and partial-power-down mode. It routes one input address (A) to either Y0 or Y1 under active-low enable (E), used in portable audio docks and SSD power sequencing.

For engineers reviewing the SN74LVC1G19DRLRG4 datasheet, SN74LVC1G19DRLRG4 pinout, SN74LVC1G19DRLRG4 application, or SN74LVC1G19DRLRG4 equivalent, key selection criteria include its 6-pin SOT-5X3 footprint, 1.6 mm × 1.2 mm body size, guaranteed 10 µA max ICC across voltage range, and overvoltage-tolerant inputs (up to 5.5 V) enabling mixed-voltage interface bridging.

Technical Context

This device implements a single-bit address decode function with active-low enable control: when E = low, A selects Y0 (A = low) or Y1 (A = high) as the only low-output; when E = high, both outputs remain high. Its CMOS design ensures rail-to-rail output swing and balanced rise/fall times.

It features I_off circuitry that disables outputs during power-off, blocking back-drive current up to ±50 mA per pin and supporting hot-plug operation. Input tolerance to 5.5 V independent of V_CC allows interfacing with 5-V logic while powered from 1.8 V or 3.3 V rails.

Key Specifications

Pinout & Package

SOT-5X3 (DRL) package: 6-pin, 1.6 mm × 1.2 mm body, 0.5 mm pitch, exposed pad optional, RoHS-compliant, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 1-of-2 decoder/demultiplexer applications.

Compared with SN74LVC1G19DRLRG4, the DCKRG4 offers broader assembly flexibility while the DRYRG4 delivers superior density and thermal efficiency-both retain identical logic behavior, I_off, and overvoltage tolerance, enabling drop-in substitution where package constraints allow.

Availability

SN74LVC1G19DRLRG4 is available at Aetrix Electronics and suitable for portable audio docks, client SSD power management, and USB-C peripheral detection requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.

Supply support for SN74LVC1G19DRLRG4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company delivering analog and embedded processing solutions, with leadership in logic, power management, and signal chain technologies since 1930.

SN74LVC1G19DRLRG4 belongs to TI's LVC low-voltage CMOS logic family, designed specifically for space-constrained, mixed-voltage portable electronics requiring robust signal integrity and ultra-low static power.

FAQ

What is the maximum propagation delay of SN74LVC1G19DRLRG4 at 3.3 V?

The maximum propagation delay (t_pd) of SN74LVC1G19DRLRG4 is 4 ns at V_CC = 3.3 V with C_L = 15 pF, measured from input transition (A or E) to valid output transition (Y0 or Y1). This value is specified across –40°C to 85°C and reflects worst-case timing for synchronous enable/decode operations in the SN74LVC1G19DRLRG4 device.

Does SN74LVC1G19DRLRG4 support 5-V input signals while powered from 1.8 V?

Yes, SN74LVC1G19DRLRG4 supports input voltages up to 5.5 V regardless of V_CC level, including when powered from 1.8 V. This overvoltage tolerance is explicitly guaranteed in the datasheet and enables direct interfacing with 5 V microcontrollers or legacy peripherals without external level-shifting circuitry for the SN74LVC1G19DRLRG4.

What is the purpose of the I_off feature in SN74LVC1G19DRLRG4?

The I_off feature in SN74LVC1G19DRLRG4 disables all outputs when V_CC = 0 V, limiting leakage current to ±10 µA and preventing damaging back-current flow from live system buses into the unpowered device. This enables safe live insertion, partial-power-down operation, and back-drive protection - critical for modular systems using the SN74LVC1G19DRLRG4.

Which package variant does SN74LVC1G19DRLRG4 use, and what are its dimensions?

SN74LVC1G19DRLRG4 uses the SOT-5X3 (DRL) package: a 6-pin, surface-mount outline measuring 1.6 mm × 1.2 mm nominal body size with 0.5 mm lead pitch. It is RoHS-compliant, moisture sensitivity level 1, and rated for –40°C to 85°C operation - confirmed in TI's official packaging addendum for SN74LVC1G19DRLRG4.

Can SN74LVC1G19DRLRG4 drive multiple CMOS inputs simultaneously?

Yes, SN74LVC1G19DRLRG4 can drive multiple CMOS inputs simultaneously: it provides ±24 mA output drive at 3.3 V, sufficient for ≥10 standard 74LVC inputs (each ~1 µA I_IH/I_IL). Total output current per pin must stay within ±50 mA, and total device current must not exceed ±100 mA - verified in the Absolute Maximum Ratings table for SN74LVC1G19DRLRG4.